Definitions
1.NounAny of several species of trees of the genus Aesculus.
Aesculus hippocastanum (horse chestnut).
2.NounAesculus hippocastanum (horse chestnut).
3.NounAny of several species of the related Mexican buckeye (genus Ungnadia).
4.NounSeed or fruit of these plants.
5.NounA native or resident of the American state of Ohio.
6.NounAny of species Junonia coenia of butterflies; a common buckeye.
7.NounA confection made from peanut butter fudge partially dipped in chocolate to leave a circle of peanut butter visible, supposed to resemble the nut of the Ohio buckeye tree.